Glaus spreckels



emos SPRECKELS, or SAN FRANCISCO, CALIFORNIA.-

' LcttersPatentNo. 75,656, dated March 17,-

IMPROVEMENT INTHE M'A-NUFAG'II'URBOF OBUSHBDSUGAR.

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To ALL WHOM IT MAY CONCERN:

Be it known that =1, -CLAUs SPRECKELS, of the city and count of San Francisco, State of California, have invented an Improved Processfor the Manufacture of Crushed Sugar; and I do hereby declare that the best mode which I have discovered for performing the said process, is described in the following'specification, with tlf'ebest apparatus which Lhave founder devised for performing the same.- i e The object of my invention or process is to manufacture crushed sugar directly from the centrifugal machine,

without the tedious delay in the method now employed, to'wit, that of turning the melted sugar into moulds and allowing it to refine and drain, before it can be crushed into the sufficient-sized lumps or .pieces of comi merce, this process requiring from ten to fourteen days while, by myimproved process, only about three days time is required, and a sugar furnished of a quality equally as good, and at an expense of at least oneucent per pound'less.

In order to accomplish this object, I take thecrude or raw sugar and dissolve and boil it in the usual manner.

From the boiler it is pumpcd into tanks, from thence through the usual'process, into the vacuum-pan, inwhich it is boiled down .and granulated to a proper state of crystallization. From this state it is passed through a mixer and well incorporated, after which it is carried to the usual centrifugal machine, which extracts all ofthe water and sirup froln the grains or crystals.

After this part of the process has been performed, the sugar is taken directly from the centrifugal machine, and placed in moulds of suitable size and passed to a press, where it is subjected to a sufficient pressure to i make the sugar adhere together in any desired form. The form of mould which I prefer to use, is about'twcntyfour (24) inches long; ten (10) inches wide, and from two to three inches in thickness. From the press the cakes so formed are removed toa. room having suitable shelves, where they are subjected to a mild heat for about ten (10) hours, after which it is removed from the shelves, and placed in an oyen with an increased temperature,

where it is kept for a. short time.

being passed through a grinding-mil, and sold as powdered sugar...

The. process being new finished, the products-consisting of the cakes of sugar, are removed to a crushingmill of the usual construction, with points, and there reduced to a marketable crushed sugar, the firm parts The kind of press employed is immaterial; any goodp'res's will answer, having suitable power, with the necessary appliances. I i

-Having thus described my process, so'as to enable any person skilled in the art or science to which itmost nearly appertains to perform the same without further invention or experiment, what I clai'myand'desire to secure by Let'tersPaten't, is-- I The manufacture of the crushed sugar of commercedirectly from the centrifugal machine, in the manner substantially as herein described. I i r In witness whereoi, I have hereunto set my hand and seal. .7 i v CLAUS SPRECKEL$. [LISI] Witnesses: v 1 v J'No. L. Boone, i i Geo. H.; Srnozr'e. i 

